IC DRIVER STEPPER MOTOR 24PWRDIP

L6208N

Manufacturer Part NumberL6208N
DescriptionIC DRIVER STEPPER MOTOR 24PWRDIP
ManufacturerSTMicroelectronics
TypeDriver
L6208N datasheet
 


Specifications of L6208N

ApplicationsStepper Motor Driver, 2 PhaseNumber Of Outputs2
Current - Output5.6AVoltage - Supply8 V ~ 52 V
Operating Temperature-25°C ~ 125°CMounting TypeThrough Hole
Package / Case24-DIP (0.300", 7.62mm)Operating Supply Voltage8 V to 52 V
Supply Current0.01 AMounting StyleThrough Hole
Motor TypeStepperNo. Of Outputs4
Output Current7.1AOutput Voltage52V
Supply Voltage Range8V To 52VDriver Case StyleDIP
No. Of Pins24Rohs CompliantYes
For Use With497-5488 - EVAL BOARD FOR L6208N DIP497-4136 - EVAL BOARD FOR L6208 SERIESLead Free Status / RoHS StatusLead free / RoHS Compliant
Voltage - Load-Other names497-5342-5
L6208N
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DMOS DRIVER FOR BIPOLAR STEPPER MOTOR
OPERATING SUPPLY VOLTAGE FROM 8 TO 52V
5.6A OUTPUT PEAK CURRENT (2.8A RMS)
R
0.3 TYP. VALUE @ T
DS(ON)
OPERATING FREQUENCY UP TO 100KHz
NON DISSIPATIVE OVERCURRENT
PROTECTION
DUAL INDEPENDENT CONSTANT t
CURRENT CONTROLLERS
FAST/SLOW DECAY MODE SELECTION
FAST DECAY QUASI-SYNCHRONOUS
RECTIFICATION
DECODING LOGIC FOR STEPPER MOTOR
FULL AND HALF STEP DRIVE
CROSS CONDUCTION PROTECTION
THERMAL SHUTDOWN
UNDER VOLTAGE LOCKOUT
INTEGRATED FAST FREE WHEELING DIODES
TYPICAL APPLICATIONS
BIPOLAR STEPPER MOTOR
DESCRIPTION
The L6208 is a DMOS Fully Integrated Stepper Motor
Driver with non-dissipative Overcurrent Protection,
realized in MultiPower-BCD technology, which com-
BLOCK DIAGRAM
VBOOT
V
BOOT
CHARGE
VCP
PUMP
THERMAL
PROTECTION
EN
CONTROL
HALF/FULL
CLOCK
STEPPING
SEQUENCE
RESET
GENERATION
CW/CCW
VOLTAGE
REGULATOR
10V
5V
September 2003
= 25°C
j
PowerDIP24
PWM
(20+2+2)
OFF
bines isolated DMOS Power Transistors with CMOS
and bipolar circuits on the same chip. The device in-
cludes all the circuitry needed to drive a two-phase
bipolar stepper motor including: a dual DMOS Full
Bridge, the constant off time PWM Current Controller
that performs the chopping regulation and the Phase
Sequence Generator, that generates the stepping
sequence. Available in PowerDIP24 (20+2+2),
PowerSO36 and SO24 (20+2+2) packages, the
L6208 features a non-dissipative overcurrent protec-
tion on the high side Power MOSFETs and thermal
shutdown.
V
BOOT
OCD
A
OVER
CURRENT
OCD
B
DETECTION
10V
GATE
LOGIC
PWM
ONE SHOT
MASKING
MONOSTABLE
TIME
OVER
CURRENT
DETECTION
GATE
LOGIC
L6208
SO24
PowerSO36
(20+2+2)
ORDERING NUMBERS:
L6208N (PowerDIP24)
L6208PD (PowerSO36)
L6208D (SO24)
VS
A
V
BOOT
OUT1
A
OUT2
A
10V
SENSE
A
+
VREF
-
SENSE
A
COMPARATOR
RC
A
BRIDGE A
VS
B
OUT1
B
OUT2
B
SENSE
B
VREF
B
RC
BRIDGE B
B
D01IN1225
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L6208N Summary of contents

  • Page 1

    ... OVER CURRENT OCD B DETECTION 10V GATE LOGIC PWM ONE SHOT MASKING MONOSTABLE TIME OVER CURRENT DETECTION GATE LOGIC L6208 SO24 PowerSO36 (20+2+2) ORDERING NUMBERS: L6208N (PowerDIP24) L6208PD (PowerSO36) L6208D (SO24 BOOT OUT1 A OUT2 A 10V SENSE A + VREF - SENSE A COMPARATOR RC A BRIDGE A VS ...

  • Page 2

    L6208 ABSOLUTE MAXIMUM RATINGS Symbol Parameter V Supply Voltage S V Differential Voltage between OUT1 , OUT2 , SENSE OUT1 , OUT2 Bootstrap Peak Voltage BOOT V ,V Input ...

  • Page 3

    THERMAL DATA Symbol R Maximum Thermal Resistance Junction-Pins th-j-pins R Maximum Thermal Resistance Junction-Case th-j-case R th-j-amb1 Maximum Thermal Resistance Junction-Ambient R th-j-amb1 Maximum Thermal Resistance Junction-Ambient R th-j-amb1 Maximum Thermal Resistance Junction-Ambient R th-j-amb2 Maximum Thermal Resistance Junction-Ambient (1) ...

  • Page 4

    L6208 PIN DESCRIPTION PACKAGE SO24/ PowerSO36 Name PowerDIP24 PIN # PIN # 1 10 CLOCK 2 11 CW/CCW 3 12 SENSE OUT1 18, GND 18 OUT1 9 ...

  • Page 5

    PIN DESCRIPTION (continued) PACKAGE SO24/ PowerSO36 Name PowerDIP24 PIN # PIN # 21 5 OUT2 22 7 VCP 23 8 RESET 24 9 VREF (6) Also connected at the output drain of the Over current and Thermal protection MOSFET. Therefore, ...

  • Page 6

    L6208 ELECTRICAL CHARACTERISTICS (continued 25° 48V, unless otherwise specified) amb s Symbol Parameter I Low Level Logic Input Current IL I High Level Logic Input Current IH V Turn-on Input Threshold th(ON) V Turn-off Input Threshold ...

  • Page 7

    ELECTRICAL CHARACTERISTICS (continued 25° 48V, unless otherwise specified) amb s Symbol Parameter t PWM Recirculation Time OFF I Input Bias Current at pins VREF BIAS and VREF B Over Current Protection I Input Supply Overcurrent SOVER ...

  • Page 8

    L6208 Figure 2. Clock to Output Delay Time CLOCK I OUT D01IN1317 Figure 3. Minimum Timing Definition; Clock Input CLOCK V Figure 4. Minimum Timing Definition; Logic Inputs CLOCK LOGIC INPUTS RESET V th(OFF) 8/27 V th(ON) V th(ON) th(OFF) ...

  • Page 9

    Figure 5. Overcurrent Detection Timing Definition I OUT I SOVER ON BRIDGE OFF V EN 90% 10% CIRCUIT DESCRIPTION POWER STAGES and CHARGE PUMP The L6208 integrates two independent Power MOS Full Bridges. Each Power MOS has an R ical ...

  • Page 10

    L6208 Figure 6. Charge Pump Circuit LOGIC INPUTS Pins CONTROL, HALF/FULL, CLOCK, RESET and CW/CCW are TTL/CMOS and uC compatible logic inputs. The internal structure is shown in Fig. 7. Typical value for turn-on and turn-off thresholds are respectively V ...

  • Page 11

    PWM CURRENT CONTROL The L6208 includes a constant off time PWM current controller for each of the two bridges. The current control circuit senses the bridge current by sensing the voltage drop across an external sense resistor connected be- tween ...

  • Page 12

    L6208 Figure 11. Output Current Regulation Waveforms I OUT V REF R SENSE V SENSE V REF 2.5V ON SYNCHRONOUS OR QUASI SYNCHRONOUS RECTIFICATION OFF D01IN1334 Figure 12 shows the magnitude of the Off Time t ...

  • Page 13

    MIN   t > t – RCRISE DT  600 · C RCRISE OFF Figure 13 shows the lower limit for the ...

  • Page 14

    L6208 DECAY MODES The CONTROL input is used to select the behavior of the bridge during the off time. When the CONTROL pin is low, the Fast Decay mode is selected and both transistors in the bridge are switched off ...

  • Page 15

    The drive mode is selected by the HALF/FULL input and the current state of the sequence generator as described below. A rising edge of the CLOCK input advances the state machine to the next state. The direction of rotation ...

  • Page 16

    L6208 Figure 18. Wave Drive Mode Start Up or Reset NON-DISSIPATIVE OVERCURRENT PROTECTION The L6208 integrates an Overcurrent Detection Circuit (OCD). This circuit provides protection against a short circuit to ground or between two phases of the ...

  • Page 17

    Figure 20 shows the Overcurrent Detection operation. The Disable Time t ation can be easily programmed by means of the accurate thresholds of the logic inputs affected whether by C and R values and its magnitude is reported ...

  • Page 18

    L6208 Figure 21. t versus C DISABLE Figure 22. t versus C DELAY 0.1 1 THERMAL PROTECTION ...

  • Page 19

    APPLICATION INFORMATION A typical Bipolar Stepper Motor Driver application using L6208 is shown in Fig. 23. Typical component values for the application are shown in Table 2. A high quality ceramic capacitor in the range of 100 to 200 nF ...

  • Page 20

    L6208 Output Current Capability and IC Power Dissipation In Fig. 24, 25, 26 and 27 are shown the approximate relation between the output current and the IC power dis- sipation using PWM current control driving a two-phase stepper motor, for ...

  • Page 21

    Figure 26. IC Power Dissipation versus Output Current in WAVE Mode (full step one phase on). WAVE DRIVE [ 0.5 1 Figure 27. IC Power Dissipation versus Output Current in MICROSTEPPING ...

  • Page 22

    L6208 Figure 28. PowerSO36 Junction-Ambient Thermal Resistance versus On-Board Copper Area. º Figure 29. PowerDIP24 Junction-Ambient Thermal Resistance versus On-Board Copper Area. º ...

  • Page 23

    Figure 32. Typical Quiescent Current vs. Supply Voltage 5 1kHz sw 5.4 5.2 5.0 4.8 4 [V] S Figure 33. Normalized Typical Quiescent Current vs. Switching Frequency Iq / (Iq ...

  • Page 24

    L6208 mm DIM. MIN. TYP. MAX. A 3.60 a1 0.10 0. 0.10 b 0.22 0.38 c 0.23 0.32 D (1) 15.80 16.00 D1 9.40 9.80 E 13.90 14.50 e 0.65 e3 11.05 E1 (1) 10.90 11.10 ...

  • Page 25

    DIM. MIN. TYP. MAX. MIN. A 4.320 A1 0.380 0.015 A2 3.300 B 0.410 0.460 0.510 0.016 B1 1.400 1.520 1.650 0.055 c 0.200 0.250 0.300 0.008 D 31.62 31.75 31.88 1.245 E 7.620 8.260 0.300 e 2.54 E1 ...

  • Page 26

    ... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics ...

  • Page 27

    ... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics ...